Lab tests CPT 84100 Outpatient

Phosphorus test cost in Detroit, MI

In Detroit-Warren-Dearborn, MI, 30 hospitals list a cash price for phosphorus (phosphate) blood test: from $6.54 to $93.75, with a median of $21.00. The lowest listed price is at Henry Ford Wyandotte Hospital and 3 other hospitals — $14.46 less than the median here. Across Michigan, the median is $21.00 at 85 hospitals.

Cash prices at 30 facilities across 21 cities for code 84100, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 27, 2026; the hospital files themselves were last updated between Dec 31, 2025 and Sep 2, 2026.

Lowest$6.54Henry Ford Wyandotte Hospital + 3 more
Median$21.00half pay less
Highest$93.75in this market
Difference14.3×highest vs lowest

Where each hospital's price falls

Each dot is one hospital's cash price on a scale from the lowest to the highest in Detroit-Warren-Dearborn, MI.

median
Lowest $6.54Highest $425.75

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Henry Ford Wyandotte Hospital lowest Wyandotte, MI · (734) 246-6000 HB LAB PHOSPHORUS INORGANIC $6.54 $32.00 $2.48–$16.67 80% Jun 28, 2026
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Henry Ford Macomb Hospital lowest Clinton Twp, MI · (586) 263-2300 HB LAB PHOSPHORUS INORGANIC $6.54 $32.00 $2.48–$22.72 80% Jun 28, 2026
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Henry Ford Health West Bloomfield Hospital lowest West Bloomfield, MI · (248) 325-1000 HB LAB PHOSPHORUS INORGANIC $6.54 $32.00 $2.48–$16.67 80% Jun 28, 2026
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Henry Ford Health Hospital lowest Detroit, MI · (313) 916-2600 HB LAB PHOSPHORUS INORGANIC $6.54 $32.00 $3.86–$6.54 80% Jun 28, 2026
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Henry Ford Rochester Hospital Rochester, MI · (248) 652-5000 PHOSPHOROUS $6.58 $14.00 $5.31–$5.63 53% —
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Henry Ford Providence Southfield Hospital Southfield, MI · (248) 849-3000 PHOSPHORUS; INORGANIC $8.40 $15.00 $1.01–$7.38 44% —
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Henry Ford Providence Novi Hospital - Novi Campus Novi, MI · (248) 849-3000 PHOSPHORUS; INORGANIC $8.40 $15.00 $1.01–$7.38 44% —
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Henry Ford Providence Novi Hospital - Novi Campus Novi, MI · (248) 849-3000 PHOSPHORUS; INORGANIC $8.40 $15.00 $1.01–$7.38 44% —
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Henry Ford Providence Southfield Hospital Southfield, MI · (248) 849-3000 PHOSPHORUS; INORGANIC $8.40 $15.00 $1.01–$7.38 44% —
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McLaren Port Huron Port Huron, MI · (810) 987-5000 ASSAY OF PHOSPHORUS $9.55 $19.10 $2.59–$9.70 50% Dec 31, 2025
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McLaren Port Huron Port Huron, MI · (810) 987-5000 Phosphorus Level $9.90 $19.80 $2.59–$14.85 50% Dec 31, 2025
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Ascension River District Hospital East China Township, MI · (810) 329-7111 PHOSPHORUS $11.22 $20.04 $5.61–$6.61 44% —
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Ascension River District Hospital East China Township, MI · (810) 329-7111 PHOSPHORUS $11.22 $20.04 $5.61–$6.61 44% —
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Henry Ford Health Warren Hospital Warren, MI · (586) 573-5000 PHOSPHORUS $12.32 $22.00 $5.61–$6.61 44% —
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Henry Ford Health Warren Hospital Warren, MI · (586) 573-5000 PHOSPHORUS $12.32 $22.00 $5.61–$6.61 44% —
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McLaren Oakland Pontiac, MI · (248) 338-5000 Phosphorus Level $15.75 $31.50 $2.59–$24.33 50% Dec 31, 2025
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McLaren Macomb Mount Clemens, MI · (586) 493-8000 Phosphorus Level $16.75 $33.50 $2.59–$20.69 50% Dec 31, 2025
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Henry Ford Health St John Hospital Detroit, MI · (313) 343-4000 PHOSPHORUS $19.04 $34.00 $5.61–$6.61 44% —
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Henry Ford Health St John Hospital Detroit, MI · (313) 343-4000 PHOSPHORUS $19.04 $34.00 $5.61–$6.61 44% —
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Surgeons Choice Medical Center Southfield, MI PHOSPHORUS $20.00 $20.00 $4.18–$4.65 — —
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Surgeons Choice Medical Center Southfield, MI PHOSPHORUS INORGANIC REF $20.00 $20.00 $4.18–$4.65 — —
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Beaumont Hospital - Taylor Taylor, MI · (313) 295-5000 Hc Phosphorous Level $21.00 $21.00 — — —
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Corewell Health Wayne Hospital Wayne, MI · (734) 467-4175 Hc Phosphorous Level $21.00 $21.00 — — —
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Beaumont Hospital, Troy Troy, MI · (248) 964-8800 Hc Phosphorous Level $21.00 $21.00 — — —
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Beaumont Hospital - Grosse Pointe Grosse Pointe, MI · (313) 473-1000 Hc Phosphorous Level $21.00 $21.00 — — —
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Corewell Health Trenton Hospital Trenton, MI · (734) 671-3800 Hc Phosphorous Level $21.00 $21.00 — — —
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St Mary Mercy Livonia Livonia, MI · (734) 655-4800 HC Phosphorus $24.05 $37.00 $1.70–$37.00 35% Mar 31, 2026
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St Joseph Mercy Livingston Hospital Brighton, MI · (517) 545-6000 HC Phosphorus $24.05 $37.00 $1.70–$37.00 35% Mar 31, 2026
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St Joseph Mercy Oakland Pontiac, MI · (248) 858-3000 HC Phosphorus $24.05 $37.00 $1.70–$37.00 35% Mar 31, 2026
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Karmanos Cancer Center Detroit, MI · (800) 576-6266 PHOSPHOROUS AUTO $25.10 $50.20 $2.59–$37.65 50% Dec 31, 2025
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Karmanos Cancer Center Detroit, MI · (800) 576-6266 PHOSPHOROUS, AUTO $25.10 $50.20 $2.59–$37.65 50% Dec 31, 2025
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St Joseph Mercy Oakland Pontiac, MI · (248) 858-3000 HC Phosphorus Body Fluid $28.60 $44.00 $1.70–$44.00 35% Mar 31, 2026
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McLaren Lapeer Region Lapeer, MI · (810) 667-5500 Phosphorus Level $42.50 $85.00 $2.59–$44.54 50% Dec 31, 2025
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RIM - Rehabilitation Institute of Michigan Detroit, MI PHOSPHORUS $63.00 $84.00 — 25% Apr 8, 2026
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VHS Childrens Hospital of Michigan Detroit, MI · (313) 745-5437 PHOSPHORUS $68.25 $91.00 — 25% Apr 6, 2026
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VHS Huron Valley-Sinai Hospital Commerce Charter Twp, MI · (248) 937-3370 PHOSPHORUS $71.25 $95.00 $4.74–$16.13 25% May 20, 2026
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Harper University Hospital Detroit, MI · (313) 745-6211 PHOSPHORUS $73.50 $98.00 $4.74–$16.13 25% Sep 2, 2026
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Harper University Hospital Detroit, MI · (313) 745-6211 PHOSPHORUS $73.50 $98.00 $4.74–$16.13 25% Aug 20, 2026
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VHS Detroit Receiving Hospital Detroit, MI · (313) 745-2941 PHOSPHORUS $83.25 $111.00 — 25% Apr 7, 2026
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VHS Sinai Grace Hospital Detroit, MI · (313) 966-3300 PHOSPHORUS $93.75 $125.00 — 25% Apr 8, 2026
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St Joseph Mercy Oakland Pontiac, MI · (248) 858-3000 HC Phosphorus $425.75 — $1.70–$30.93 — Mar 31, 2026
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Outpatient: lowest $6.54, median $21.00, highest $93.75 — a 14.3× difference within the same market.

As an inpatient, the same code is billed by 23 facilities here, median $21.00. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.

Cash or insurance?

At 11 of 21 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.

What it is

A phosphorus test measures phosphate in the blood. It is used with calcium for kidney disease, bone disease and parathyroid problems.

What the price covers

The price usually covers running the test. The blood draw (36415) is often billed as a separate line.